DOOVAC SML-140 Manuale d'uso - Pagina 10
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achieved, or
Vacuum On/Off valve failure
motor current
Inlet filter is clogged
is too high
Inlet or outlet pipe is clogged
Inlet/outlet pipeline's diameter is too
large or too long.
Vane has been damaged
Gap between the vane and cylinder wall
is inappropriate
Failure of an inner part
Vacuum pump
Wrong supply power voltage
will not run.
Motor has
Motor winding failure
failed
Vacuum pump or circuit breaker failure
Motor failure
Vacuum pump
Foreign material in the vacuum pump
clogged
Vacuum pump has corroded
Reverse rotation of vacuum pump
After the pump stopped, foreign matter
entered it and damaged the vane.
Vacuum pump
Wrong cable wiring
runs, but is
overloaded or
Reverse rotation of vacuum pump
generates
After long-term shutdown
abnormal
Foreign matter has entered and damaged
noise, or motor
the vane or bearing
current is
excessive
Abnormal noise
Damaged bearing
Damaged vane
Replace with a new valve.
Clean the filer or replace with a new
one.
Clean the pipe(s).
Replace with a pipe of the
appropriate diameter.
Check and replace, as necessary.
Adjust the gap (contact us).
Contact us.
Check supply voltage and frequency
with the nameplate.
Rewind
Open the pump-side cooling fan
cover. Rotate the fan by hand. If it
rotates freely, the problem is at the
pump. Otherwise, check the circuit
breaker.
Replace the motor
Send us the product for repair.
Check the inlet filter. Install an
additional filter if necessary.
Send us the product for repair.
Send us the product for repair.
Check the direction cable wiring.
Send us the product for repair.
Check cable wiring with wiring
diagram.
Change phase connection.
Cap the outlet for warming up.
Send us the product for repair.
Send us the product for repair.
Send us the product for repair.